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+<link href="https://fonts.googleapis.com/css?family=Open+Sans:300&display=swap" rel="stylesheet">
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+<body>
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+<div id="header">
+<div id="title1"></div>
+
+<h1><b>Alfonso Parra Rubio. </b>  aprubio [at] mit.edu</h1>
+<p><a href=index.html><img class="loogo"src="img/logo.png" alt="LOGO" /></img></a></p>
+</div>
+<div id="mySidenav" class="sidenav">
+    <p><span class = "weeknum"><a href="https://alfonso.pages.cba.mit.edu/home/"> _About me</a>   </span></p>
+    <p><span class = "weeknum"><a href="http://cba.mit.edu/about/index.html"> _About my lab</a>   </span></p>
+
+
+</div>
+
+
+<div id="content">
+
+<p> <b> <i>This 5.2 question was done in with my clasmate Alex Berke.</i> </b> </p>
+
+<h1>Problem Set 5.</h1>
+
+<h2> <b>Problem 5.1</b> Make a first proposal of what you spect to be your final project based on:</h2>
+
+<li>Read the course website,1 which describes the possible types of projects and lists some (old)
+project ideas.</li>
+
+<li>Look at the class problems and work you’ve done during class, both for suitable problems/results and to understand what types of problems you enjoyed.</li>
+
+<li>Talk to your fellow students, in the Project Discussion Comingle room or the corresponding
+Coauthor thread.2 Also feel free to talk to staff during class or office hours or over email.</li>
+
+<li>Look ahead at future lecture topics to see whether there’s something there you’d like to
+explore deeper. (You can always watch the videos early.)</li>
+
+<li>Read Problem Set 6,3 which gives the exact specification for a project proposal.</li>
+
+
+<h2> <b>Problem 5.2</b>  [Skeletal Reconstruction]. Draw a polygon, or a set of disjoint polygons, whose
+straight skeleton is given by the black lines in the following diagram:</h2>
+
+<p> <b> <i>This 5.2 question was done in with my clasmate Alex Berke.</i> </b> </p>
+
+<p>I was able to find without a problem all bisector lines for leters <b>I and T </b>without a problem because of its <b>orthogonality</b> . <b> I wanted to draw exactly the weird slopes that the M have </b> on its non orthogonal angles. To do so I used the grid. At the top skeleton line that breaks orthogonality, it can be seen that has a slope of 2:1. I drawed a normal line to the skeleton. I saw that if I placed that line in the vertex where meets other skeleton lines, it will cut the horizontal line (top part of the M) in a specific point of the grid. <b>Applying symmetry to this intersection will tell me a ponint with the other (symmetric respect the skeleton line that forces to be bisector line)</b> line will pass forcing to that root be a bisector of those pair of lines. Same method were applied to the lower weird angle lines. </p>
+
+<img src="img/MITcandf.png" width="800px"alt="">
+
+
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 <div class="thumb_wrap"><div class="thumb"><b>HW1</b> Pset .<a href="hw1.html"><img class="thumb_img" src="img/hw1title.png" width=800px></a></br></div></div>
 <div class="thumb_wrap"><div class="thumb"><b>HW2</b> .<a href="hw2.html"><img class="thumb_img" src="img/pset2image.png" width=800px></a></br></div></div>
 <div class="thumb_wrap"><div class="thumb"><b>HW3</b> .<a href="hw3.html"><img class="thumb_img" src="img/pset3img.png" width=800px></a></br></div></div>
+<div class="thumb_wrap"><div class="thumb"><b>HW4</b> .<a href="hw4.html"><img class="thumb_img" src="img/portadahw4.png" width=800px></a></br></div></div>
+<div class="thumb_wrap"><div class="thumb"><b>HW5</b> .<a href="hw5.html"><img class="thumb_img" src="img/portadahw5.png" width=800px></a></br></div></div>